For more elegant look you may prefer to install metal outdoor benches. They may save you some money but don't rush into buying the cheapest ones, as low quality steel is not protected against rust. Quality metal benches pay back in the long run because they have very long life and need very little maintenance. Many gardeners however think that metal benches aren't comfortable enough for sitting - so you may want to try them first before buying.

The bench press is a three part movement. This may seem silly at first, but think about it this way. First you have the descent, the stretch of your pectorals, second you have the initial push, the engagement of the pecs, and third you have the finish, the engagement and contraction of your triceps. Three parts, two parts that really engage your muscles, and one part that is primarily your weakness.

Don't put too much benches at once - start with 2-3 and see how they look and whether you use them enough. Then you can add more. Depending on the size of your garden you may want to have between 2 and a dozen of outdoor benches.